/Engine/Plugins/Online/OnlineSubsystem/Source/Public/OnlineError.h
Common error results
enum EOnlineErrorResult { Success, NoConnection, RequestFailure, InvalidCreds, InvalidUser, InvalidAuth, AccessDenied, TooManyRequests, AlreadyPending, InvalidParams, CantParse, InvalidResults, IncompatibleVersion, NotConfigured, NotImplemented, MissingInterface, Canceled, FailExtended, NoGameSession, Unknown, }